Home / 80,284.97-120,451.76-30,380.37

Finding the Fourth Proportional to 80,284.97, 120,451.76 and 30,380.37

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Solution

The fourth proportional to 80,284.97, 120,451.76 and 30,380.37 is: 45,579.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,284.97 : 120,451.76 = 30,380.37 : x
  2. Step 2: Convert to fraction form
    80,284.97/120,451.76 = 30,380.37/x
  3. Step 3: Cross multiply
    80,284.97x = 120,451.76 × 30,380.37
  4. Step 4: Simplify right side
    80,284.97x = 3,659,368,546.28
  5. Step 5: Solve for x
    x = 3,659,368,546.28/80,284.97
  6. Step 6: Final answer
    x = 45,579.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.